From d4a8e2930e1c276715c133bda05fbee45bd2c8a6 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Fri, 26 Apr 2019 03:23:27 +0200
Subject: [PATCH] sh: Add a simple "export" command for setting environment
 variables.

---
 Userland/sh.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Userland/sh.cpp b/Userland/sh.cpp
index 6813e97b839..9f41ee206c2 100644
--- a/Userland/sh.cpp
+++ b/Userland/sh.cpp
@@ -65,6 +65,22 @@ static int sh_exit(int, char**)
     return 0;
 }
 
+static int sh_export(int argc, char** argv)
+{
+    if (argc == 1) {
+        for (int i = 0; environ[i]; ++i)
+            puts(environ[i]);
+        return 0;
+    }
+    auto parts = String(argv[1]).split('=');
+    if (parts.size() != 2) {
+        fprintf(stderr, "usage: export variable=value\n");
+        return 1;
+    }
+    putenv(const_cast<char*>(String::format("%s=%s", parts[0].characters(), parts[1].characters()).characters()));
+    return 0;
+}
+
 static int sh_cd(int argc, char** argv)
 {
     char pathbuf[PATH_MAX];
@@ -120,6 +136,10 @@ static bool handle_builtin(int argc, char** argv, int& retval)
         retval = sh_exit(argc, argv);
         return true;
     }
+    if (!strcmp(argv[0], "export")) {
+        retval = sh_export(argc, argv);
+        return true;
+    }
     return false;
 }